Name	Info	Provider	Link
Full text from AIR - Univ. Milan	free resource	Archivio Istituzionale della Ricerca Unimi	https://air.unimi.it/handle/2434/732960
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32411633/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/32411633
	free resource	The Korean Surgical Society	https://www.astr.or.kr/DOIx.php?id=10.4174/astr.2020.98.5.277